Ore-concentrator



2 Sheets-Sheet 1.

(No Model.)

0. H. TAYLOR.

ORE GONG-ENTRATOR.

Patented Mar. 5, 1889.

' (No Moc lel.) H J 2 Sheets-Sheet 2. G. H. TAYLOR.

ORE GONGENTRATOR.

Patented Mar. 5, 1889.

N. PETERS Pmmmna m mn wzahingmn, 11c.

UNrTEn STATES PATENT OFFICE.

CHARLES H. TAYLOR, OF BOSTON, MASSACHUSETTS.

ORE-CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 398,863, dated March 5, 1889. Application filed l'uly Ill, 1887. Serial No. 244,240. (No model.)

T 0 aZZ whom it may concern Be it known that I, CHARLES H. TAYLOR, of Boston, in the county of Sufli'olk and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Ore-Coucentrators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

The invention relates to an ore-concentrator employing one or more pans contained or f held in a tank filled with water, and in which water the pan or pans are given a vertical and horizontal vibratory movement; and the invention consists in certain constructions and combinations, as indicated by the claim appended to this specification.

In the drawings, l1igure 1 a view in perspective of a concentrator having the features of my invention. Fig. 2 is a plan view thereof. Fig. 3 is a vertical central section thereof. Fig. 4 is a vertical cross-section thereof.

A is the tank. It preferably formed from planks or sheet metal, and it has the side walls, a, the rear wall, a, the front wall, a and the bottom a which is inclined from the lower edge of the side walls to the center a, and from the lower edge of the rear wall, a, to the lower edge of the front walke so as to form an inclined bottom. There istormcd to project from the wall (1' the boxing in which the tailings-clcvator l3 works. The l tailings-elevat'or extends to the pocket orlowest section, a, of the tank, to which the tailings are moved by gravity down the inclined surfaces of the bottom of the tank. Anysuitable form of tailingu-eleva-tormay be used. I have shown a common construction comprising substantially a belt, Z), having projections b, and mounted upon an upper rotary pulley, b and a lower pulley, N, which is secured to suitable supports in the lowest partof the tank, which is at the lower end of the passage 12 formed by the box 0*", in which the elevator B runs.

I have represented in the drawings the tank as containing two pans, C, which are exactly alike. Each pan is suspended in the tank by a rod, 0, attached to its rear end, and by the rod 0', which is attached at its lower ;movements are simultaneously end to a bail, c and at its upper end to an eccentric, 0 The bail is secured to the pan near the front end by pivots c. There is also attached to each bail 0 to extend horizontally therefrom, a rod, extending to the eccentric c. The eccentric a through the rod 0, provides the main part of the pan with a vertical movementor reciprocation, and the eccentric 0 gives the pan a horizontal or sidewise movement or reciprocation, and the two conimuni' cated to the front end of the pan, the eecentric for providing it with a vertical movement having a throw of about seven inches and the eccentric providing it with ahorizontal movement having a throw of about four inches and rotating from four to six times as rapidly as the eccentric for providing vertical reciprocations.

Each pan is shaped substantially as represented in the drawings that is, it is made shallow and narrow at its rear end, c", and is graduallyincreased in depth and width to its center.

It is made, preferably, of metal. Its sides 0 extend in plan outwardly or diverge from the rear end and have a rounded front end, 0 (See Fig. 2.) The sides also are inclined inward to the bottom c and the bottom c is inclined from the rear end, to the Hat portion c. (See Fig. 3.) Iprefer that the sides of the pan be joined to the bottom in a manner to form a. curve rather than an angle, to facilitate the movement of the ore therein. Each pan has a sluiccway, D, formed by a trough for conveying crushed ore from the crusher or other source of supply to the shallow end of the pan, preferably by means of flowing water.

In operation the tank is filled with water to the dotted line E, Fig. 3, and the crushed ore is conveyed to the pans, and the pans caused to be vibrated and oscillated in the water, the shallow or stationary end of the pan bcing substantially upon the water-level, and the movable end being hung so as to be alternatel y dipped into the water and elevated slightly from it. This movement of the pan causes the heavier particles of ore to gradually work their way forward on the bottom of the pan, while the lighter substances are washed from the top of the pan into the tank,

and, working their way into the pocket or lowest portion of the tank, are removed therefrom by the elevator B.

The concentrator is intended to take mate- 5 rial directly from Cornish rolls, and without the screening, sizing, or handling of a similar nature, and it concentrates the coarse and fine particles of minerals, at the same time doing away with the necessity for jigs, screens, con- IO centrating-tables, and their operating devices, which have heretofore been necessary in concentrating minerals; and not only do they enable this saving to he made, but they also concentrate very rapidly, so that four pans of proper size will concentrate all the mineral that can be run through a set of the largest size Cornish ro1lsnamely, from eighty to one hundred tons a day. Another advantage arising fromv their use is that they cost much less 2o than the usual concentrating apparatus, and can be operated with much less power, and by much less labor, and they can be worked equally well with a stamp-battery, and will catch and concentrate sulphides, quicksilver, 2 5 &c., and they can be used in silver-mills for concentrating the pulp after it leaves the settiers.

\Vhile I prefer to arrange the pans in pairs in a single tank and to place an elevator between the two for removing the tailings, as above specified, I would not be understood as limiting myself to this number of pans in 1 one tank or to the particular location of the elevator.

3 5 In operation the crushed material, when coming from the rolls or stamps, is discharged from the sluiceway into the rear or shallow end of the pans, and is quickly and thoroughly concentrated there. The heavier portions of 4.0 the mine al stay on the bottom and gradually slide forward 011 the pan-bottom, the lighter portions of the ground material staying on top and working off over the front end of the pan, when it falls on the inclined bottom of the tank and slides to the center, from which the elevator discharges it.

When it becomes necessary to remove the concentrated mineral or ore from the pan, the feeding of the crushed ore thereto is stopped, or the crushed ore is conveyed to another pan. The pan is then stopped and the upper or unconcentrated portion of the material therein is shoveled into the back end. of another pan, and the remaining concentrated ore or mineral is then shoveled from the pan into a car or other receptacle at the side of the tank.

I prefer to make the pans about twelve feet long, twelve inches wide and four inches deep atthe shallow end, and five feet wide at the widest point, and eighteen inches deep at the lower or discharge end.

I would say that I do not confine the inveir tion to the concentrating of crushed ore, as it may be used for concentrating ore found in earth or gravel. I would also say that I do not confine myself to the particular mechanism herein described for providing the pans with the horizontal and perpemlieular vi bratory movements.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- The combination, with the water-tank and 

